Organic Field-Effect Transistors Made of Epitaxially Grown Crystals of a Thiophene/Phenylene Co-oligomer



Organic field-effect transistors (FETs) based on epitaxially grown crystals of a thiophene/phenylene co-oligomer (see Figure and cover) are described. The FETs exhibit good operation characteristics, and the epitaxial needle-like crystals display good charge transport properties along the needle axis. The maximum hole mobility of 0.66 cm2 V–1 s–1 is close to that of vapor phase grown oligothiophene single crystals.